2010-10-23 07:15:35 -04:00
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2011-04-12 04:46:01 -04:00
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XZ Utils Release Notes
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======================
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2018-04-29 11:15:37 -04:00
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5.2.4 (2018-04-29)
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* liblzma:
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- Allow 0 as memory usage limit instead of returning
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LZMA_PROG_ERROR. Now 0 is treated as if 1 byte was specified,
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which effectively is the same as 0.
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- Use "noexcept" keyword instead of "throw()" in the public
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headers when a C++11 (or newer standard) compiler is used.
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- Added a portability fix for recent Intel C Compilers.
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- Microsoft Visual Studio build files have been moved under
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windows/vs2013 and windows/vs2017.
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* xz:
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- Fix "xz --list --robot missing_or_bad_file.xz" which would
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2019-05-08 01:30:57 -04:00
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try to print an uninitialized string and thus produce garbage
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2018-04-29 11:15:37 -04:00
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output. Since the exit status is non-zero, most uses of such
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a command won't try to interpret the garbage output.
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- "xz --list foo.xz" could print "Internal error (bug)" in a
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corner case where a specific memory usage limit had been set.
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2016-12-30 06:25:10 -05:00
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5.2.3 (2016-12-30)
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* xz:
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- Always close a file before trying to delete it to avoid
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problems on some operating system and file system combinations.
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- Fixed copying of file timestamps on Windows.
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- Added experimental (disabled by default) sandbox support using
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Capsicum (FreeBSD >= 10). See --enable-sandbox in INSTALL.
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* C99/C11 conformance fixes to liblzma. The issues affected at least
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some builds using link-time optimizations.
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* Fixed bugs in the rarely-used function lzma_index_dup().
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* Use of external SHA-256 code is now disabled by default.
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It can still be enabled by passing --enable-external-sha256
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to configure. The reasons to disable it by default (see INSTALL
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for more details):
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- Some OS-specific SHA-256 implementations conflict with
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OpenSSL and cause problems in programs that link against both
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liblzma and libcrypto. At least FreeBSD 10 and MINIX 3.3.0
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are affected.
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- The internal SHA-256 is faster than the SHA-256 code in
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some operating systems.
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* Changed CPU core count detection to use sched_getaffinity() on
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GNU/Linux and GNU/kFreeBSD.
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* Fixes to the build-system and xz to make xz buildable even when
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encoders, decoders, or threading have been disabled from libilzma
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using configure options. These fixes added two new #defines to
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config.h: HAVE_ENCODERS and HAVE_DECODERS.
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2015-09-29 06:57:28 -04:00
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5.2.2 (2015-09-29)
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* Fixed bugs in QNX-specific code.
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* Omitted the use of pipe2() even if it is available to avoid
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portability issues with some old Linux and glibc combinations.
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* Updated German translation.
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* Added project files to build static and shared liblzma (not the
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whole XZ Utils) with Visual Studio 2013 update 2 or later.
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* Documented that threaded decompression hasn't been implemented
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yet. A 5.2.0 NEWS entry describing multi-threading support had
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incorrectly said "decompression" when it should have said
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"compression".
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2015-02-26 06:01:09 -05:00
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5.2.1 (2015-02-26)
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* Fixed a compression-ratio regression in fast mode of LZMA1 and
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LZMA2. The bug is present in 5.1.4beta and 5.2.0 releases.
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* Fixed a portability problem in xz that affected at least OpenBSD.
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* Fixed xzdiff to be compatible with FreeBSD's mktemp which differs
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from most other mktemp implementations.
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* Changed CPU core count detection to use cpuset_getaffinity() on
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FreeBSD.
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2014-12-21 07:32:33 -05:00
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5.2.0 (2014-12-21)
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Since 5.1.4beta:
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* All fixes from 5.0.8
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* liblzma: Fixed lzma_stream_encoder_mt_memusage() when a preset
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was used.
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* xzdiff: If mktemp isn't installed, mkdir will be used as
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a fallback to create a temporary directory. Installing mktemp
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is still recommended.
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* Updated French, German, Italian, Polish, and Vietnamese
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translations.
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Summary of fixes and new features added in the 5.1.x development
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releases:
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* liblzma:
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- Added support for multi-threaded compression. See the
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lzma_mt structure, lzma_stream_encoder_mt(), and
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lzma_stream_encoder_mt_memusage() in <lzma/container.h>,
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lzma_get_progress() in <lzma/base.h>, and lzma_cputhreads()
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in <lzma/hardware.h> for details.
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- Made the uses of lzma_allocator const correct.
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- Added lzma_block_uncomp_encode() to create uncompressed
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.xz Blocks using LZMA2 uncompressed chunks.
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- Added support for LZMA_IGNORE_CHECK.
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- A few speed optimizations were made.
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- Added support for symbol versioning. It is enabled by default
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on GNU/Linux, other GNU-based systems, and FreeBSD.
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- liblzma (not the whole XZ Utils) should now be buildable
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with MSVC 2013 update 2 or later using windows/config.h.
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* xz:
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- Fixed a race condition in the signal handling. It was
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possible that e.g. the first SIGINT didn't make xz exit
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if reading or writing blocked and one had bad luck. The fix
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is non-trivial, so as of writing it is unknown if it will be
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backported to the v5.0 branch.
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2015-05-12 11:08:24 -04:00
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- Multi-threaded compression can be enabled with the
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2014-12-21 07:32:33 -05:00
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--threads (-T) option.
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2015-05-12 11:08:24 -04:00
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[Fixed: This originally said "decompression".]
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2014-12-21 07:32:33 -05:00
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- New command line options in xz: --single-stream,
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--block-size=SIZE, --block-list=SIZES,
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--flush-timeout=TIMEOUT, and --ignore-check.
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- xz -lvv now shows the minimum xz version that is required to
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decompress the file. Currently it is 5.0.0 for all supported
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.xz files except files with empty LZMA2 streams require 5.0.2.
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* xzdiff and xzgrep now support .lzo files if lzop is installed.
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The .tzo suffix is also recognized as a shorthand for .tar.lzo.
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2014-09-14 14:50:13 -04:00
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5.1.4beta (2014-09-14)
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* All fixes from 5.0.6
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* liblzma: Fixed the use of presets in threaded encoder
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initialization.
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* xz --block-list and --block-size can now be used together
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in single-threaded mode. Previously the combination only
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worked in multi-threaded mode.
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* Added support for LZMA_IGNORE_CHECK to liblzma and made it
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available in xz as --ignore-check.
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* liblzma speed optimizations:
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- Initialization of a new LZMA1 or LZMA2 encoder has been
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optimized. (The speed of reinitializing an already-allocated
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encoder isn't affected.) This helps when compressing many
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small buffers with lzma_stream_buffer_encode() and other
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similar situations where an already-allocated encoder state
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isn't reused. This speed-up is visible in xz too if one
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compresses many small files one at a time instead running xz
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once and giving all files as command-line arguments.
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- Buffer comparisons are now much faster when unaligned access
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is allowed (configured with --enable-unaligned-access). This
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speeds up encoding significantly. There is arch-specific code
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for 32-bit and 64-bit x86 (32-bit needs SSE2 for the best
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results and there's no run-time CPU detection for now).
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For other archs there is only generic code which probably
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isn't as optimal as arch-specific solutions could be.
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- A few speed optimizations were made to the SHA-256 code.
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(Note that the builtin SHA-256 code isn't used on all
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operating systems.)
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* liblzma can now be built with MSVC 2013 update 2 or later
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using windows/config.h.
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* Vietnamese translation was added.
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2013-10-26 06:25:02 -04:00
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5.1.3alpha (2013-10-26)
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* All fixes from 5.0.5
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* liblzma:
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- Fixed a deadlock in the threaded encoder.
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- Made the uses of lzma_allocator const correct.
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- Added lzma_block_uncomp_encode() to create uncompressed
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.xz Blocks using LZMA2 uncompressed chunks.
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- Added support for native threads on Windows and the ability
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to detect the number of CPU cores.
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* xz:
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- Fixed a race condition in the signal handling. It was
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possible that e.g. the first SIGINT didn't make xz exit
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if reading or writing blocked and one had bad luck. The fix
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is non-trivial, so as of writing it is unknown if it will be
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backported to the v5.0 branch.
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- Made the progress indicator work correctly in threaded mode.
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- Threaded encoder now works together with --block-list=SIZES.
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- Added preliminary support for --flush-timeout=TIMEOUT.
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It can be useful for (somewhat) real-time streaming. For
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now the decompression side has to be done with something
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else than the xz tool due to how xz does buffering, but this
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should be fixed.
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2012-07-04 13:01:19 -04:00
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5.1.2alpha (2012-07-04)
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* All fixes from 5.0.3 and 5.0.4
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* liblzma:
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- Fixed a deadlock and an invalid free() in the threaded encoder.
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- Added support for symbol versioning. It is enabled by default
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on GNU/Linux, other GNU-based systems, and FreeBSD.
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- Use SHA-256 implementation from the operating system if one is
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available in libc, libmd, or libutil. liblzma won't use e.g.
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OpenSSL or libgcrypt to avoid introducing new dependencies.
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- Fixed liblzma.pc for static linking.
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- Fixed a few portability bugs.
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* xz --decompress --single-stream now fixes the input position after
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successful decompression. Now the following works:
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echo foo | xz > foo.xz
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echo bar | xz >> foo.xz
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( xz -dc --single-stream ; xz -dc --single-stream ) < foo.xz
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Note that it doesn't work if the input is not seekable
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or if there is Stream Padding between the concatenated
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.xz Streams.
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* xz -lvv now shows the minimum xz version that is required to
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decompress the file. Currently it is 5.0.0 for all supported .xz
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files except files with empty LZMA2 streams require 5.0.2.
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* Added an *incomplete* implementation of --block-list=SIZES to xz.
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It only works correctly in single-threaded mode and when
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--block-size isn't used at the same time. --block-list allows
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specifying the sizes of Blocks which can be useful e.g. when
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creating files for random-access reading.
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2011-04-12 04:46:01 -04:00
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5.1.1alpha (2011-04-12)
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* All fixes from 5.0.2
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* liblzma fixes that will also be included in 5.0.3:
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- A memory leak was fixed.
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- lzma_stream_buffer_encode() no longer creates an empty .xz
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Block if encoding an empty buffer. Such an empty Block with
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LZMA2 data would trigger a bug in 5.0.1 and older (see the
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first bullet point in 5.0.2 notes). When releasing 5.0.2,
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I thought that no encoder creates this kind of files but
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I was wrong.
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- Validate function arguments better in a few functions. Most
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importantly, specifying an unsupported integrity check to
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lzma_stream_buffer_encode() no longer creates a corrupt .xz
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file. Probably no application tries to do that, so this
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shouldn't be a big problem in practice.
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- Document that lzma_block_buffer_encode(),
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lzma_easy_buffer_encode(), lzma_stream_encoder(), and
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lzma_stream_buffer_encode() may return LZMA_UNSUPPORTED_CHECK.
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- The return values of the _memusage() functions are now
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documented better.
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* Support for multithreaded compression was added using the simplest
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method, which splits the input data into blocks and compresses
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them independently. Other methods will be added in the future.
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The current method has room for improvement, e.g. it is possible
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to reduce the memory usage.
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|
* Added the options --single-stream and --block-size=SIZE to xz.
|
|
|
|
|
|
|
|
|
|
* xzdiff and xzgrep now support .lzo files if lzop is installed.
|
|
|
|
|
The .tzo suffix is also recognized as a shorthand for .tar.lzo.
|
|
|
|
|
|
|
|
|
|
* Support for short 8.3 filenames under DOS was added to xz. It is
|
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|
|
experimental and may change before it gets into a stable release.
|
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|
|
|
2010-10-23 07:15:35 -04:00
|
|
|
|
2014-12-21 07:32:22 -05:00
|
|
|
5.0.8 (2014-12-21)
|
|
|
|
|
|
|
|
|
|
* Fixed an old bug in xzgrep that affected OpenBSD and probably
|
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|
|
a few other operating systems too.
|
|
|
|
|
|
|
|
|
|
* Updated French and German translations.
|
|
|
|
|
|
|
|
|
|
* Added support for detecting the amount of RAM on AmigaOS/AROS.
|
|
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|
|
* Minor build system updates.
|
|
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|
2014-09-20 14:01:21 -04:00
|
|
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5.0.7 (2014-09-20)
|
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|
|
|
|
|
|
|
|
* Fix regressions introduced in 5.0.6:
|
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|
|
|
|
|
|
|
- Fix building with non-GNU make.
|
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|
|
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|
|
- Fix invalid Libs.private value in liblzma.pc which broke
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|
|
static linking against liblzma if the linker flags were
|
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|
|
taken from pkg-config.
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2014-09-14 14:50:13 -04:00
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|
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5.0.6 (2014-09-14)
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|
|
* xzgrep now exits with status 0 if at least one file matched.
|
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|
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|
|
* A few minor portability and build system fixes
|
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|
|
2013-06-30 12:40:11 -04:00
|
|
|
5.0.5 (2013-06-30)
|
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|
|
* lzmadec and liblzma's lzma_alone_decoder(): Support decompressing
|
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|
|
.lzma files that have less common settings in the headers
|
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|
|
(dictionary size other than 2^n or 2^n + 2^(n-1), or uncompressed
|
|
|
|
|
size greater than 256 GiB). The limitations existed to avoid false
|
|
|
|
|
positives when detecting .lzma files. The lc + lp <= 4 limitation
|
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|
|
|
still remains since liblzma's LZMA decoder has that limitation.
|
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|
|
|
|
|
|
|
|
NOTE: xz's .lzma support or liblzma's lzma_auto_decoder() are NOT
|
|
|
|
|
affected by this change. They still consider uncommon .lzma headers
|
|
|
|
|
as not being in the .lzma format. Changing this would give way too
|
|
|
|
|
many false positives.
|
|
|
|
|
|
|
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|
|
* xz:
|
|
|
|
|
|
|
|
|
|
- Interaction of preset and custom filter chain options was
|
|
|
|
|
made less illogical. This affects only certain less typical
|
|
|
|
|
uses cases so few people are expected to notice this change.
|
|
|
|
|
|
|
|
|
|
Now when a custom filter chain option (e.g. --lzma2) is
|
|
|
|
|
specified, all preset options (-0 ... -9, -e) earlier are on
|
|
|
|
|
the command line are completely forgotten. Similarly, when
|
|
|
|
|
a preset option is specified, all custom filter chain options
|
|
|
|
|
earlier on the command line are completely forgotten.
|
|
|
|
|
|
|
|
|
|
Example 1: "xz -9 --lzma2=preset=5 -e" is equivalent to "xz -e"
|
|
|
|
|
which is equivalent to "xz -6e". Earlier -e didn't put xz back
|
|
|
|
|
into preset mode and thus the example command was equivalent
|
|
|
|
|
to "xz --lzma2=preset=5".
|
|
|
|
|
|
|
|
|
|
Example 2: "xz -9e --lzma2=preset=5 -7" is equivalent to
|
|
|
|
|
"xz -7". Earlier a custom filter chain option didn't make
|
|
|
|
|
xz forget the -e option so the example was equivalent to
|
|
|
|
|
"xz -7e".
|
|
|
|
|
|
|
|
|
|
- Fixes and improvements to error handling.
|
|
|
|
|
|
|
|
|
|
- Various fixes to the man page.
|
|
|
|
|
|
|
|
|
|
* xzless: Fixed to work with "less" versions 448 and later.
|
|
|
|
|
|
|
|
|
|
* xzgrep: Made -h an alias for --no-filename.
|
|
|
|
|
|
|
|
|
|
* Include the previously missing debug/translation.bash which can
|
|
|
|
|
be useful for translators.
|
|
|
|
|
|
|
|
|
|
* Include a build script for Mac OS X. This has been in the Git
|
|
|
|
|
repository since 2010 but due to a mistake in Makefile.am the
|
|
|
|
|
script hasn't been included in a release tarball before.
|
|
|
|
|
|
|
|
|
|
|
2012-06-22 12:00:23 -04:00
|
|
|
5.0.4 (2012-06-22)
|
|
|
|
|
|
|
|
|
|
* liblzma:
|
|
|
|
|
|
|
|
|
|
- Fix lzma_index_init(). It could crash if memory allocation
|
|
|
|
|
failed.
|
|
|
|
|
|
|
|
|
|
- Fix the possibility of an incorrect LZMA_BUF_ERROR when a BCJ
|
|
|
|
|
filter is used and the application only provides exactly as
|
|
|
|
|
much output space as is the uncompressed size of the file.
|
|
|
|
|
|
|
|
|
|
- Fix a bug in doc/examples_old/xz_pipe_decompress.c. It didn't
|
|
|
|
|
check if the last call to lzma_code() really returned
|
|
|
|
|
LZMA_STREAM_END, which made the program think that truncated
|
|
|
|
|
files are valid.
|
|
|
|
|
|
|
|
|
|
- New example programs in doc/examples (old programs are now in
|
|
|
|
|
doc/examples_old). These have more comments and more detailed
|
|
|
|
|
error handling.
|
|
|
|
|
|
|
|
|
|
* Fix "xz -lvv foo.xz". It could crash on some corrupted files.
|
|
|
|
|
|
|
|
|
|
* Fix output of "xz --robot -lv" and "xz --robot -lvv" which
|
|
|
|
|
incorrectly printed the filename also in the "foo (x/x)" format.
|
|
|
|
|
|
|
|
|
|
* Fix exit status of "xzdiff foo.xz bar.xz".
|
|
|
|
|
|
|
|
|
|
* Fix exit status of "xzgrep foo binary_file".
|
|
|
|
|
|
|
|
|
|
* Fix portability to EBCDIC systems.
|
|
|
|
|
|
|
|
|
|
* Fix a configure issue on AIX with the XL C compiler. See INSTALL
|
|
|
|
|
for details.
|
|
|
|
|
|
|
|
|
|
* Update French, German, Italian, and Polish translations.
|
|
|
|
|
|
|
|
|
|
|
2011-05-22 09:42:11 -04:00
|
|
|
5.0.3 (2011-05-21)
|
|
|
|
|
|
|
|
|
|
* liblzma fixes:
|
|
|
|
|
|
|
|
|
|
- A memory leak was fixed.
|
|
|
|
|
|
|
|
|
|
- lzma_stream_buffer_encode() no longer creates an empty .xz
|
|
|
|
|
Block if encoding an empty buffer. Such an empty Block with
|
|
|
|
|
LZMA2 data would trigger a bug in 5.0.1 and older (see the
|
|
|
|
|
first bullet point in 5.0.2 notes). When releasing 5.0.2,
|
|
|
|
|
I thought that no encoder creates this kind of files but
|
|
|
|
|
I was wrong.
|
|
|
|
|
|
|
|
|
|
- Validate function arguments better in a few functions. Most
|
|
|
|
|
importantly, specifying an unsupported integrity check to
|
|
|
|
|
lzma_stream_buffer_encode() no longer creates a corrupt .xz
|
|
|
|
|
file. Probably no application tries to do that, so this
|
|
|
|
|
shouldn't be a big problem in practice.
|
|
|
|
|
|
|
|
|
|
- Document that lzma_block_buffer_encode(),
|
|
|
|
|
lzma_easy_buffer_encode(), lzma_stream_encoder(), and
|
|
|
|
|
lzma_stream_buffer_encode() may return LZMA_UNSUPPORTED_CHECK.
|
|
|
|
|
|
|
|
|
|
- The return values of the _memusage() functions are now
|
|
|
|
|
documented better.
|
|
|
|
|
|
|
|
|
|
* Fix command name detection in xzgrep. xzegrep and xzfgrep now
|
|
|
|
|
correctly use egrep and fgrep instead of grep.
|
|
|
|
|
|
|
|
|
|
* French translation was added.
|
|
|
|
|
|
|
|
|
|
|
2011-04-01 01:47:20 -04:00
|
|
|
5.0.2 (2011-04-01)
|
|
|
|
|
|
|
|
|
|
* LZMA2 decompressor now correctly accepts LZMA2 streams with no
|
|
|
|
|
uncompressed data. Previously it considered them corrupt. The
|
|
|
|
|
bug can affect applications that use raw LZMA2 streams. It is
|
|
|
|
|
very unlikely to affect .xz files because no compressor creates
|
|
|
|
|
.xz files with empty LZMA2 streams. (Empty .xz files are a
|
|
|
|
|
different thing than empty LZMA2 streams.)
|
|
|
|
|
|
|
|
|
|
* "xz --suffix=.foo filename.foo" now refuses to compress the
|
|
|
|
|
file due to it already having the suffix .foo. It was already
|
|
|
|
|
documented on the man page, but the code lacked the test.
|
|
|
|
|
|
|
|
|
|
* "xzgrep -l foo bar.xz" works now.
|
|
|
|
|
|
|
|
|
|
* Polish translation was added.
|
|
|
|
|
|
|
|
|
|
|
2011-01-28 13:16:57 -05:00
|
|
|
5.0.1 (2011-01-29)
|
|
|
|
|
|
|
|
|
|
* xz --force now (de)compresses files that have setuid, setgid,
|
|
|
|
|
or sticky bit set and files that have multiple hard links.
|
|
|
|
|
The man page had it documented this way already, but the code
|
|
|
|
|
had a bug.
|
|
|
|
|
|
|
|
|
|
* gzip and bzip2 support in xzdiff was fixed.
|
|
|
|
|
|
|
|
|
|
* Portability fixes
|
|
|
|
|
|
|
|
|
|
* Minor fix to Czech translation
|
|
|
|
|
|
|
|
|
|
|
2010-10-23 07:15:35 -04:00
|
|
|
5.0.0 (2010-10-23)
|
|
|
|
|
|
|
|
|
|
Only the most important changes compared to 4.999.9beta are listed
|
|
|
|
|
here. One change is especially important:
|
|
|
|
|
|
|
|
|
|
* The memory usage limit is now disabled by default. Some scripts
|
|
|
|
|
written before this change may have used --memory=max on xz command
|
|
|
|
|
line or in XZ_OPT. THESE USES OF --memory=max SHOULD BE REMOVED
|
|
|
|
|
NOW, because they interfere with user's ability to set the memory
|
|
|
|
|
usage limit himself. If user-specified limit causes problems to
|
|
|
|
|
your script, blame the user.
|
|
|
|
|
|
|
|
|
|
Other significant changes:
|
|
|
|
|
|
|
|
|
|
* Added support for XZ_DEFAULTS environment variable. This variable
|
|
|
|
|
allows users to set default options for xz, e.g. default memory
|
|
|
|
|
usage limit or default compression level. Scripts that use xz
|
|
|
|
|
must never set or unset XZ_DEFAULTS. Scripts should use XZ_OPT
|
|
|
|
|
instead if they need a way to pass options to xz via an
|
|
|
|
|
environment variable.
|
|
|
|
|
|
|
|
|
|
* The compression settings associated with the preset levels
|
|
|
|
|
-0 ... -9 have been changed. --extreme was changed a little too.
|
|
|
|
|
It is now less likely to make compression worse, but with some
|
|
|
|
|
files the new --extreme may compress slightly worse than the old
|
|
|
|
|
--extreme.
|
|
|
|
|
|
|
|
|
|
* If a preset level (-0 ... -9) is specified after a custom filter
|
|
|
|
|
chain options have been used (e.g. --lzma2), the custom filter
|
|
|
|
|
chain will be forgotten. Earlier the preset options were
|
|
|
|
|
completely ignored after custom filter chain options had been
|
|
|
|
|
seen.
|
|
|
|
|
|
|
|
|
|
* xz will create sparse files when decompressing if the uncompressed
|
|
|
|
|
data contains long sequences of binary zeros. This is done even
|
|
|
|
|
when writing to standard output that is connected to a regular
|
|
|
|
|
file and certain additional conditions are met to make it safe.
|
|
|
|
|
|
|
|
|
|
* Support for "xz --list" was added. Combine with --verbose or
|
|
|
|
|
--verbose --verbose (-vv) for detailed output.
|
|
|
|
|
|
|
|
|
|
* I had hoped that liblzma API would have been stable after
|
|
|
|
|
4.999.9beta, but there have been a couple of changes in the
|
|
|
|
|
advanced features, which don't affect most applications:
|
|
|
|
|
|
|
|
|
|
- Index handling code was revised. If you were using the old
|
|
|
|
|
API, you will get a compiler error (so it's easy to notice).
|
|
|
|
|
|
|
|
|
|
- A subtle but important change was made to the Block handling
|
|
|
|
|
API. lzma_block.version has to be initialized even for
|
|
|
|
|
lzma_block_header_decode(). Code that doesn't do it will work
|
|
|
|
|
for now, but might break in the future, which makes this API
|
|
|
|
|
change easy to miss.
|
|
|
|
|
|
|
|
|
|
* The major soname has been bumped to 5.0.0. liblzma API and ABI
|
|
|
|
|
are now stable, so the need to recompile programs linking against
|
|
|
|
|
liblzma shouldn't arise soon.
|
|
|
|
|
|
